Medicine-dropper.



No. 897,131. PATENTED AUG. 25, 1908.

H. I. OWEN.

MEDICINE DROPPER.

APPLICATION FILED 00T.7, 1907.

Jiwerzfar:

$ WWW the top of the stopper.

HENRY r. OWEN, or FULTON, MISSOURI.

IVLEDICINE-DROPPER.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed October 7, 1907. Serial No. 396,350.

To all whom it may concern:

Be it known that I, HENRY I. OWEN, a citizen. of the United States, residing at Fulton, in the county of Callaway and State of Missouri, have invented certain new and useful Improvements in Medicine-Droppers, of which the following is a specification.

This invention relatesto liquid-droppers. IVhile susceptible of use with any kind of freely-flowing medicine, it is particularly adapted to drop anesthetics.

The construction provided by the invention is such that the size and frequency of the drops can be easily and uickly regulated, the liquid will continue to ow at the rate for which set without diminution or increase in the amount dropped, and waste of the liquid is avoided. The dropper is not only of assistance and convenience to the skilled anesthetist, but it also makes possible the employment in emergency of one not skilled in the administration of anesthetics.

When read in connection with the description herein, the details of construction and arrangement of parts contemplated by this invention will be apparent from the accompanying drawings, forming p art hereof, wherein an embodiment of the invention is disclosed, for purposes of illustration.

Like reference-characters refer to 'corresponding parts in the views of the drawings, of which Figure 1 is a view of the invention as applied 'to a bottle; Fig. 2 is an enlarged view of the dropper-end of the discharge-tube and the dro per-valve; and Fig. 3 is a sectional view ta en on a line running longitudinally of the valve-screws.

Referring more particularly to the drawings, B designates a bottle or other suitable receptacle, in the neck or opening of which is located a stopper 0. The sto per has centrally disposed therethrough and tightly fitted therein a casing D. r The casing is tightly connected to, or integrally formed with, at its outer end, a cap E, which extends over An air-conduit A is provided to admit air to the receptacle as liquid is discharged. This conduit passes through cap E, with which it is tightly connected, and through casing D. It is bent at its inner end, so as to be above the liquid when the receptacle isinclined for discharge of liquid, and it is similarly bent at its outer end. The outer end is provided with a cap I, forming a closure to prevent evaporation when the device is not in use, and being readily removable for admission of air when the device is in use.

Extending through casing D and cap E, in a manner similar to conduit A, is a dischargeconduit K. A wick W is located in conduit K and extends into the receptacle and also a short distance out of the discharge-end of the conduit. The wick is preferably made of braided silk or of any other suitable absorbent material.

A dropper valve or cock F is attached to the outer end of conduit K. A thumbscrew G on the valve is arranged to operate transversely across the passage through the valve and to impinge the wick, and a plugscrew H is disposed opposite to screw G and is operable across the valve-passage and against the latter screw. The inner end of the plug-screw is formed with a notch of a size to contain the wick when it is compressed therein by the thumbscrew.

When in use, chloroform, ether, or other li uid is placed in the receptacle, care belng ta en that the amount of liquid does not exceed two-thirds the capacity of the receptacle. and the receptacle is inclined sothat the 'li uid has a tendency to fiowthrough the wic W and conduit K. The bent inner end of the air-conduit prevents the assage of hquld therethrough. The flow 0 liquid throu h the wick and conduit K is controlled y thumb-screw G. The size of the drops is determined by the shape given to the end of'the Cap I is removed for admission of air,

wick, which is pointed for small drops and out off square or frayed for larger drops.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a liquid-dropper, the combination of a receptacle, a discharge-conduit therefor, a wick in said conduit, a screw movable across said conduit and having a notch for reception of said wick, and another screw cooperating with said notched screw. to impinge said wick. 0

2. In a liquid-dropper, a receptacle having an opening, a stopper in said opening eom- Witness my hand at Fulton, Missouri this prising a'gasing extending therethrou h, a the 3rd day of October, 1907. cap on sai stopper connected with sai casing, an air-conduit connected with said cap HENRY OWEN 5 and passing through said casing, and a dis-, Witnesses:

charge conduit extending through said casing J. R. BAKER, andcap. J. W. TINQHER 

